Andrew Huberman· PhD
needle lengths of about one millimeter to 2.5 millimeters seem to be more effective than shorter needle lengths.
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The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
needle lengths of about one millimeter to 2.5 millimeters seem to be more effective than shorter needle lengths.
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